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/*
* Copyright (c) 2018-2019 ARM Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "arm_compute/graph/backends/CL/CLDeviceBackend.h"
#include "arm_compute/graph/Graph.h"
#include "arm_compute/graph/GraphContext.h"
#include "arm_compute/graph/INode.h"
#include "arm_compute/graph/Logger.h"
#include "arm_compute/graph/Tensor.h"
#include "arm_compute/graph/backends/BackendRegistrar.h"
#include "arm_compute/graph/backends/CL/CLFunctionFactory.h"
#include "arm_compute/graph/backends/CL/CLNodeValidator.h"
#include "arm_compute/graph/backends/CL/CLSubTensorHandle.h"
#include "arm_compute/graph/backends/CL/CLTensorHandle.h"
#include "arm_compute/core/TensorInfo.h"
#include "arm_compute/runtime/BlobLifetimeManager.h"
#include "arm_compute/runtime/CL/CLBufferAllocator.h"
#include "arm_compute/runtime/CL/CLScheduler.h"
#include "arm_compute/runtime/MemoryGroup.h"
#include "arm_compute/runtime/MemoryManagerOnDemand.h"
#include "arm_compute/runtime/PoolManager.h"
#include "support/ToolchainSupport.h"
namespace arm_compute
{
namespace graph
{
namespace backends
{
namespace
{
bool file_exists(const std::string &filename)
{
std::ifstream file(filename);
return file.good();
}
} // namespace
/** Register CL backend */
static detail::BackendRegistrar<CLDeviceBackend> CLDeviceBackend_registrar(Target::CL);
CLDeviceBackend::CLDeviceBackend()
: _context_count(0), _tuner(), _allocator(nullptr), _tuner_file()
{
}
CLDeviceBackend::~CLDeviceBackend()
{
// TODO (geopin01) : Shouldn't call non exception safe stuff here
if(_tuner.tune_new_kernels() && !_tuner.lws_table().empty() && !_tuner_file.empty())
{
_tuner.save_to_file(_tuner_file);
}
}
void CLDeviceBackend::set_kernel_tuning(bool enable_tuning)
{
_tuner.set_tune_new_kernels(enable_tuning);
}
void CLDeviceBackend::set_kernel_tuning_mode(CLTunerMode tuning_mode)
{
_tuner.set_tuner_mode(tuning_mode);
}
void CLDeviceBackend::initialize_backend()
{
// Setup Scheduler
CLScheduler::get().default_init(&_tuner);
// Create allocator with new context
_allocator = support::cpp14::make_unique<CLBufferAllocator>();
}
void CLDeviceBackend::release_backend_context(GraphContext &ctx)
{
ARM_COMPUTE_UNUSED(ctx);
_context_count--;
if(_context_count == 0) // No more context using the backend: free resources
{
_allocator = nullptr;
}
}
void CLDeviceBackend::setup_backend_context(GraphContext &ctx)
{
// Force backend initialization
_context_count++;
if(_context_count == 1)
{
initialize_backend();
}
// Setup tuner
_tuner_file = ctx.config().tuner_file;
// Load tuner data if available
if(file_exists(_tuner_file))
{
_tuner.load_from_file(_tuner_file);
}
set_kernel_tuning(ctx.config().use_tuner);
set_kernel_tuning_mode(ctx.config().tuner_mode);
// Setup a management backend
if(ctx.memory_management_ctx(Target::CL) == nullptr)
{
MemoryManagerContext mm_ctx;
mm_ctx.target = Target::CL;
mm_ctx.intra_mm = create_memory_manager(MemoryManagerAffinity::Buffer);
mm_ctx.cross_mm = create_memory_manager(MemoryManagerAffinity::Buffer);
mm_ctx.cross_group = std::make_shared<MemoryGroup>(mm_ctx.cross_mm);
mm_ctx.allocator = _allocator.get();
ctx.insert_memory_management_ctx(std::move(mm_ctx));
}
}
bool CLDeviceBackend::is_backend_supported()
{
return arm_compute::opencl_is_available();
}
IAllocator *CLDeviceBackend::backend_allocator()
{
return _allocator.get();
}
std::unique_ptr<ITensorHandle> CLDeviceBackend::create_tensor(const Tensor &tensor)
{
// Get tensor descriptor
const TensorDescriptor &tensor_desc = tensor.desc();
ARM_COMPUTE_ERROR_ON(tensor_desc.target != Target::CL);
// Create backend tensor handle
TensorInfo info(tensor_desc.shape, 1, tensor_desc.data_type, tensor_desc.quant_info);
info.set_data_layout(tensor_desc.layout);
auto backend_tensor_handle = support::cpp14::make_unique<CLTensorHandle>(info);
return std::move(backend_tensor_handle);
}
std::unique_ptr<ITensorHandle> CLDeviceBackend::create_subtensor(ITensorHandle *parent, TensorShape shape, Coordinates coords, bool extend_parent)
{
if(parent == nullptr)
{
return nullptr;
}
return support::cpp14::make_unique<CLSubTensorHandle>(parent, shape, coords, extend_parent);
}
std::unique_ptr<arm_compute::IFunction> CLDeviceBackend::configure_node(INode &node, GraphContext &ctx)
{
ARM_COMPUTE_LOG_GRAPH_VERBOSE("Configuring CL node with ID : " << node.id() << std::endl);
ARM_COMPUTE_ERROR_ON(node.assigned_target() != Target::CL);
// Configure node
return CLFunctionFactory::create(&node, ctx);
}
arm_compute::Status CLDeviceBackend::validate_node(INode &node)
{
ARM_COMPUTE_LOG_GRAPH_VERBOSE("Validating CL node with ID : " << node.id() << std::endl);
ARM_COMPUTE_ERROR_ON(node.assigned_target() != Target::CL);
return CLNodeValidator::validate(&node);
}
std::shared_ptr<arm_compute::IMemoryManager> CLDeviceBackend::create_memory_manager(MemoryManagerAffinity affinity)
{
if(affinity == MemoryManagerAffinity::Offset)
{
ARM_COMPUTE_LOG_GRAPH_WARNING("CL Backend does not support offset affinity memory management!");
return nullptr;
}
auto lifetime_mgr = std::make_shared<BlobLifetimeManager>();
auto pool_mgr = std::make_shared<PoolManager>();
auto mm = std::make_shared<MemoryManagerOnDemand>(lifetime_mgr, pool_mgr);
return mm;
}
} // namespace backends
} // namespace graph
} // namespace arm_compute
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